Feature
<br />100% brand new and high quality
<br />With a push key by which you can change the value settings and save.
<br />When voltage is below the set value, it will buzzer very loudly with red LED light. (pre-set value is 3.3V)
<br />Mini shape, no larger than a common key.
<br />Compact, easy to carry.
<br />Really useful in flight if you can't see the lights.
<br />Use for 1-8s Lipo/Li-ion/LiMn/Li-Fe.
<br />Voltage detection precision: +_0.01V. 
<br />Unit voltage display range: 0.5~4.5V 
<br />Total voltage display range: 0.5~36V 
<br />1S test mode voltage range: 4-15V
<br />Low voltage alarm mode for 2-8S 
<br />Alarm set value range:OFF~2.7~3.8V 
<br />Size: 40mm x 25mm x 11mm 
<br />Net weight: 9g
<br />Color: Red / Green (Send by random)
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<br />Package include 
<br />1*Lipo Battery Voltage Tester